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Chess Database with Master Chess Games

Shane's Chess Information Database - Wikipedia

learning - Where can I find free training tools like detailed annotated chess openings, middle games and endgames in the PGN format? - Chess Stack Exchange

We made a tool that lets you search the lichess game database by chess concepts. Link in the comments : r/chess

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All 1d6 Opening Repertoire Collection (6 Digital DVDs)

Introducing the June 2023 Release of Opening Master Chess Database: Get Ready for Summer Tournaments!

15 Million Games Chess Database download

Quantifying the complexity and similarity of chess openings using online chess community data